Apparatus for use in manufacturing leggings.



M. nosENvI/ASSER, APPARATUS FOR'USE IN MANUFACTURING LEGGINGS.

APPLICATION FILED FEB-7`I9I2.

Patented Apr. 27, 1915.

0 f". TIII IIIIII [wil 7 00 WITNESS/58 ATTORNEYS THE NORRIS PEYERS C0..PHCTO-LITHO.. WASHINGTON. n C' MORRIS ROSENWASSER, OF NEW YORK, N. Y.

APFARATUS FOR USE IN MANUFACTURING LEGGINGS. Ti

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application led February 7, 1912. Serial No. 676,088.

To all whom it may concern:

Be it known that I, MORRIS RosnNwAssnR, residing in the city, county,and State of New York, have invented certain new and useful Improvementsin Apparatus for Use in Manufacturing Leggings, of which the followingis a specification.

This invention relates to certain new and useful forming or shapingapparatus, which is particularly useful in connection with themanufacture of leggings or similar articles.

One of the objects of the invention is to provide an apparatus of thekind referred to which is adapted to give shape to a tubular blank.

Another object is to provide a new and improved apparatus of the kindreferred to which is adapted to give shape to a tubular blank by theapplication of pressure interiorlyof the tube, said apparatus comprisingan expanding former having relatively movable sections.

Another object of the invention is to provide a .former in whichprovision is made for the guidance of a knife, whereby the blank afterit has been shaped upon the former may be properly trimmed to sizeandslitted prior to its removal from the former.

Still another object of the invention .is to provide an improved form ofknife particularly well adapted for use in connection with the guidingmeans embodied in the forming device.

Other objectsand aims of the invention, more or less broad than thosestated above, will be in part obvious and in partvspecifically referredto in the course of the'following description of the elements,combinations, arrangements of parts, and applications of principlesconstituting the invention; and the scope of protection contemplatedwill appear from the claims.

In the accompanying drawings in which I have shown an illustrativeembodiment of the invention; Figure 1 is an elevation of an apparatusembodying my invention, showing a tubular blank in place thereon readyfor the shaping operation; Fig. 2 is a view similar to Fig. 1 butshowing the apparatus expanded, and showing the form of the blank aftersuch expansion; Fig. 3 is a perspective illustrating the subject matter`of Fig. 2; Fig. 4 is a detail sectional view, partly in elevation,showing the knife and the guiding means therefor; and Fig. 5 is aperspective of a finished legging as an example of an article inconnection with the manufacture of which my invention may be employed.

Referring to the numerals on the drawings 1 indicates one of thesections of the expanding former and 2 the other section. These sectionsmay of course have various configurations in accordance with the shapeof the article which is to be manufactured. In the drawings, I haveshown the sections of the forming member of such shape as that theapparatus may be used in connection with such a blank as is shown inFigs. l, 2 and 3 in order to aid in the production of such an article asis shown in F ig.`5. In this illustrative embodiment, accordingly, thesection 1 of the shaping device has an outwardly longitudinally straightsurface 3, and is ofsubstantially the same semi-circular cross sectionthroughout its length; whereas the section 2 of the forming device hasan outwardly longitudinally bulged surface 4, and while generallysemi-circular in cross section, its cross sectional area is of coursevariable in accordance with said bulge. The opposed faces of saidsections 1 and 2 are generally fiat and straight, and the sections arepreferably of the same length. Said sections 1 and 2 are connectedtogether so that they may be moved toward or from each other in adirection transversely of their length. 'Io that end, I may provideshafts 5 and 6 at the respective ends of the sections 1 and 2, saidshafts being fixed against longitudinal movement in one of saidsections, as for instance in section 2, and the other ends of saidshafts 5 and 6 having threaded engagement withtheother of said members,as for instance with the member 1, at the ends thereof respectively. Inthe present instance it will be noted that the shafts 5 and 6 arelocated at opposite ends of the forming members 1 and 2 so as not tointerfere with the tubular blank which is interposed between saidshafts. Thus the expanding pressure will be applied equally at oppositeends of the expanding members.

It will be evident that, the section 2 being secured to a base as shown,the sections 1 and 2 may be given relative movement toward or from eachother, if the similar shafts 5 and 6 be moved in synchronism. Suchmovement may be accomplished as by means of a connecting shaft 7, whichmay be held in proper bearings upon the inner face Le l O7.

gears 9 upon the shafts and 6. As shown in Fig.'2, the shaft` 6 which ispreferably lowermost, may be the driving shaft, and rotation thereofeffected by means of a crank Y handle or pulley 10 mounted'upon theshaft, l0

and by means of some such parallel motion device as has beendescribed/ther sections 1 and2 maybe caused to move toward or fromeachother equally throughout their Y length, so that when the blank hasbeen placed in position about the contracted forming device, said blankmay be given the 'y shape shown in Fig. 2 upon separation of the members1 and 2 in the manner described. It will be noted that by locating thedriving shaft at the lower end of the device the forming members arefree at their upper ends. This permits of the ready positioning of theblank thereon.

' The sections 1 and 2 may be made of any suitable material, Yas forinstance iron, and I preferably make provision in the outer surface ofsaid sections for the guidance of a i knife or cutter which I may employfor y trimming the expanded blank and for slit- 30'" ting it preparatoryto its removal from the forming device. In the embodiment shown,

I provide grooves running around the sections 1 and 2 at properdistances apart near the top and bottom of the'shaping device, inaccordancel with the desired length ofthe finished article. Thegroovesat one end of the sections 1 and 2, which grooves of courseregister, are indicated by the numeral 12, and the grooves at the otherend of the sections'l and 2 are indicated by the numeral 13. I alsoprovide a groove 14 running longitudinally of the outer face of thesection 1. I preferthat theV groovey 14 shall ycut across and extendbeyond the grooves 12 and 13 at the endsof the section 1, for reasonswhich will be apparent later. The grooves as described would suilice toguide a knife so that the upper and lower edges .of the expanded blankshown in Fig. 2 could be trimmed olf byV simply passing the knifeVaround the sections 1 and 2, within the grooves 12 and 1,3respectively, and the blank might be longitudinally slit by passing itlengthwise ofthe section 1 when itspoint engages in the groove 14. Iprefer however,

Y v both for the sake of added strength` in the device asla w-hole, andbecause of another resulting advantage, to cover the outer portions ofeach of the sections 1 andf2 which engage the blank to be stretched,`with a sheath or envelop of some rigid material,v

to the several grooves 12, 13 vand 14, ksaid kerfs being of less widththan the grooves which lie beneath them, and extending in linessubstantially inedially of the width of the grooves. The result of thisarrangement, as is clear from Fig. 4, is that I provide in effectunder-cut grooves. In order to utilize this fact, I contemplate using inconnection with the grooves a knife or cutter member 17, whose blade isadapted to pass through the kerfs in the metal sheath,

and `which is provided with a heel 18 at the end of the blade andextending transversely of the blade, said heel being of a thickness sothat it may pass into the kerfs in the Y sheath, but being of such alength that when it is turned withinthe groove it cannot be withdrawnuntil its length is brought parallel to the length ofthe kerf. `Thus theknife ,is eectively heldin its proper relation to the groove. As beforesuggested the groove 14 at .the front of the shaping device crosses thegrooves 11 and 12 and extends beyond them respectively toward the endsof the member 1. This is in order that the knife may be transferreddirectly from either one of the grooves 12 and 13 to the groove 14,without taking out the knife.

As many changes could be made in the above construction and manyapparently widely different embodiments of this inven- Ytion could bemade without departing from the scopethereof, it is intended that allmatter contained in theY above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense. It is also to be understood that the language used in thefollowing claims is intended to cover all of the generic and specificfeatures of the invention herein Ydescribed and all statements of thescope of the invention, which as a matter ofv 1anguage, might be said tofall therebetween.

Ved screw having threaded .engagement with another of said formers; abeveledV gear fixed to each of saidscrews; and a shaft rotatably mountedupon one of said formers having gears yfixed thereto meshing with thegears on saidscrews; and one of said screws having an operatinghandle-connected thereto for operating said entire expanding means; saidblank having a fullness at one locality and said formers being adapted,in effect, to transfer said fullness to a different locality through theoperation of said eX- panding means.

2. The combination with the relatively movable sections of an expandingformer adapted to receive an article about them and to be expandedWithin said article, of means for trimming oli' portions of saidarticle, While said article is on said former, comprising an undercutgroove having parts formed in at least tvvo of the relatively movablesections of said former, means for maintaining the parts of said groovein alinement as the sections of said former separate, and a trimming olftool in said groove, guided thereby, and being retained by the undercutWalls thereof against displacement.V

In testimony whereof I aHiX my signature 15 C'opies of this patent maybe obtained for five cents each, by addressing the Commissioner ofPatents,

` Washington, D. C.

